Now showing items 1-10 of 246
Analytical study of the acoustic field in a spherical resonator for single bubble sonoluminescence
(Acoustical Society of America Institute of Physics, 2009-09)
The acoustic ﬁeld in the liquid within a spherical solid shell is calculated. The proposed model takes into account Stoke?s wave equation in the viscous ﬂuid, the membrane theory to describe the solid shell motion and the ...
An Alternative Optical Method for Acoustic Resonance Detection in HID Lamps
(IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC, 2011)
Acoustic resonances are observed in high-pressure discharge lamps operated with ac input modulated power frequencies in the kilohertz range. This paper describes an optical resonance detection method for high-intensity ...
Resonant frequency shifts induced by a large spherical object in an air-filled acoustic cavity
(J. Acoust. Soc. Am., 2007-06)
Acoustic resonances are modified when objects are introduced into a chamber. The magnitude of these changes depends on the object position, size, and shape, as well as on its acoustic properties. Here, an experimental study ...
Diamond-Based Thin Film Bulk Acoustic Wave Resonator for Biomedical Applications
(IOP Publishing, 2013)
Nowadays it is in constant growing the development of thin film bulk acoustic resonators. If the piezoelectric material is going to be implanted in the human body, an important requirement is the biocompatibility of ...
Modeling and Dynamic Analysis of an Electrical Helmholtz Resonator for Active Control of Resonant Noise
This paper describes a theoretical and experimental investigation into an electrical Helmholtz resonator (EHR): that is, an active noise control (ANC) loudspeaker used in conjunction with a microphone and a feedback ...
Resonance scattering in waveguides: Acoustic scatterers
(Journal of the Acoustical Society of America, 1990)
RESONANT FREQUENCY SHIFTS INDUCED BY A LARGE SPHERICAL OBJECT IN AN AIR-FILLED ACOUSTIC CAVITY
(AMERICAN INSTITUTE OF PHYSICS, 2007)
Ionospheric Plasma Response to M (w) 8.3 Chile Illapel Earthquake on September 16, 2015
The lithosphere and the atmosphere/ionosphere continuously exchange energy through various coupling mechanisms. In particular, the earth surface displacement caused by earthquakes, volcanoes and tsunamis can manifest as ...
Guadústica: aprovechamiento del residuo industrial del bambú guadua angustifolia en el desarrollo de un producto acústico de diseño industrial
(Universidad Católica de Pereira, 2016-12-01)
El presente artículo expondrá el desarrollo de un proceso investigativo orientado a presentar un aprovechamiento del material residual generado en los procesos de industrialización del bambú guadua angustifolia por medio ...